OIL LEAK - Transfer Case ??? (1 Viewer)

[cwmoser]

I've just noticed a small puddle of oil under my 2002 LX470.
Looks like the leak is at the Drain Plug on the Transfer Case.
I assume this is the Transfer Case? See photo.

In the photo have I identified the fill plug?
What oil do I need?
I assume I just open the fill plug and pump in some more oil?
Both are 24mm.
I'm guessing when it was serviced they did not use a new Crush Washer.

 

[TxGuidedExpeditions]

DIY Transfer Case Fluid Change How-To


Pretty straight forward Write-up and you are correct about location and possible issue.

 

[cwmoser]

Replaced crush washer with Toyota part - still getting a leak at the drain bolt.
Should I have used something on the drain threads like say
pipe thread tape?

 

[Battleship]

For me, I'd check the torque, even check the wrench calibration. If it is leaking at the proper torque, I'd get a new bolt and a new washer and give it another chance.

Good luck.

 

[AMGAndrew]

Brake clean the plug area and inspect for cracks. If a new crush washer didn't fix it and the bolt/hole isn't obviously stripped, the case might have cracked when the last service was done.

 

[Dannyboy lx470]

Do people use toyota brand transfer case oil or is there no such thing ? and what is the recommended miles between changes. I'm new to the 4wd scene is the transfer case constantly being use in normal driving in H correct? .Thankyou.

 

[LandCruiserPhil]

Brake clean the plug area and inspect for cracks. If a new crush washer didn't fix it and the bolt/hole isn't obviously stripped, the case might have cracked when the last service was done.

▲this▲

FWIW - I have reused my crush washer several times and no leaks.

 

[cwmoser]

After a few days of wiping up small puddles of oil, and insuring
that the Drain Bolt was torqued to 27 ft-lbs, the leaking stopped.

Spend some quality time perusing the Factory Service Manual
and it states for leaking Transfer Case that the causes could
be "overfill". Now I had drained and refilled my Transfer Case when I installed
new crush washers - so perhaps I just put in too much oil.

BTW, where does the oil seep out? It had looked to me like it was
at the Drain Bolt but perhaps there is a hole somewhere higher and
the oil flowed onto the Drain Bolt.

 

[bmw635]

It could also be from the speedo cable connector. The oring in there need replace. It runs down the body then lowest point below the drain bolt.